FR2224783A1 - - Google Patents
Info
- Publication number
- FR2224783A1 FR2224783A1 FR7412339A FR7412339A FR2224783A1 FR 2224783 A1 FR2224783 A1 FR 2224783A1 FR 7412339 A FR7412339 A FR 7412339A FR 7412339 A FR7412339 A FR 7412339A FR 2224783 A1 FR2224783 A1 FR 2224783A1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732317830 DE2317830C3 (de) | 1973-04-09 | 1973-04-09 | Durchlicht-Schreibprojektor |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2224783A1 true FR2224783A1 (de) | 1974-10-31 |
FR2224783B1 FR2224783B1 (de) | 1978-12-01 |
Family
ID=5877521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7412339A Expired FR2224783B1 (de) | 1973-04-09 | 1974-04-08 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2317830C3 (de) |
FR (1) | FR2224783B1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2282656A1 (fr) * | 1974-08-21 | 1976-03-19 | Minnesota Mining & Mfg | Retroprojecteur ameliore a faible eblouissement |
EP0115900A1 (de) * | 1983-01-03 | 1984-08-15 | Minnesota Mining And Manufacturing Company | Korrektur der Distorsion in einem Overhead-Projektor |
DE4335244A1 (de) * | 1993-10-15 | 1995-06-22 | Daimler Benz Ag | Anordnung zur Bildaufnahme |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2840094A1 (de) * | 1978-09-12 | 1980-03-20 | Minnesota Mining & Mfg | Refraktor/reflektor-strahlungskonzentrator |
-
1973
- 1973-04-09 DE DE19732317830 patent/DE2317830C3/de not_active Expired
-
1974
- 1974-04-08 FR FR7412339A patent/FR2224783B1/fr not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2282656A1 (fr) * | 1974-08-21 | 1976-03-19 | Minnesota Mining & Mfg | Retroprojecteur ameliore a faible eblouissement |
EP0115900A1 (de) * | 1983-01-03 | 1984-08-15 | Minnesota Mining And Manufacturing Company | Korrektur der Distorsion in einem Overhead-Projektor |
DE4335244A1 (de) * | 1993-10-15 | 1995-06-22 | Daimler Benz Ag | Anordnung zur Bildaufnahme |
DE4335244B4 (de) * | 1993-10-15 | 2006-10-19 | Daimlerchrysler Ag | Anordnung zur Bildaufnahme |
Also Published As
Publication number | Publication date |
---|---|
DE2317830B2 (de) | 1979-09-06 |
DE2317830A1 (de) | 1974-10-17 |
FR2224783B1 (de) | 1978-12-01 |
DE2317830C3 (de) | 1980-06-19 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |